Earthquake with magnitude of ML 1.2 on date 31-10-2020 and time 04:46:38 (UTC) in region 2 km NE Piaggine (SA)

A magnitude ML 1.2 earthquake occured in region: 2 km NE Piaggine (SA), on

  • 31-10-2020 04:46:38 (UTC)
  • 31-10-2020 05:46:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 40.36, 15.39 at 19 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Piaggine SA 2 1311 1311
Valle dell'Angelo SA 2 248 1559
Sacco SA 3 492 2051
Laurino SA 5 1548 3599
Roscigno SA 7 817 4416
Corleto Monforte SA 9 592 5008
Campora SA 10 439 5447
Bellosguardo SA 10 794 6241
San Rufo SA 11 1754 7995
Sant'Angelo a Fasanella SA 12 635 8630
Felitto SA 12 1283 9913
Stio SA 13 872 10785
Teggiano SA 13 7976 18761
Monte San Giacomo SA 13 1572 20333
Magliano Vetere SA 13 695 21028
San Pietro al Tanagro SA 14 1695 22723
Ottati SA 14 618 23341
Sassano SA 15 5013 28354
Cannalonga SA 15 1063 29417
Sant'Arsenio SA 15 2815 32232
Aquara SA 15 1545 33777
Castel San Lorenzo SA 16 2471 36248
Moio della Civitella SA 16 1827 38075
Rofrano SA 16 1576 39651
Gioi SA 17 1278 40929
Monteforte Cilento SA 17 564 41493
Novi Velia SA 17 2324 43817
Vallo della Lucania SA 18 8531 52348
Sala Consilina SA 18 12664 65012
Atena Lucana SA 18 2336 67348
Sanza SA 18 2608 69956
Roccadaspide SA 19 7209 77165
Petina SA 20 1159 78324
Polla SA 20 5279 83603
Orria SA 20 1089 84692
Alfano SA 20 1023 85715

Municipalities with at least 50000 inhabitants

An earthquake occurred to
45 Km SE of Battipaglia (50786 inhabitants)
47 Km SW of Potenza (67122 inhabitants)
65 Km SE of Salerno (135261 inhabitants)
70 Km SE of Cava de' Tirreni (53659 inhabitants)
80 Km SE of Avellino (54857 inhabitants)
85 Km SE of Scafati (50787 inhabitants)
86 Km E of Castellammare di Stabia (66466 inhabitants)
99 Km SE of Torre del Greco (86275 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.2 2020-10-31
04:46:38
40.36 15.39 19 2020-10-31
04:53:05
Sala Sismica INGV-Roma 84305341
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-31 04:46:38 ± 0.31
Latitude 40.36 ± 0.01
Longitude 15.39 ± 0.01
Depth (km) 19 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84305341

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 984
Semi-minor axis of confidence ellipse (meter) 594
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 121
Circular confidence region, given by single value of horizontal uncertainty (meter) 980
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 101
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0.07914
Epicentral distance of station farthest from the epicenter (degree) 0.31206
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 17
Type of magnitude ML
Reference to an origin 84305341
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-31 04:53:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MCEL.HHZ. 2020-10-31T04:46:50.65 0.6 undecidable manual S 96 0.3121 108 0.55 43
IV.BULG.HHZ. 2020-10-31T04:46:49.75 0.6 undecidable manual S 183 0.2779 111 0.62 44
IV.SGO.HNZ. 2020-10-31T04:46:47.69 0.6 undecidable manual S 342 0.2149 119 0.26 48
IX.CGG3.HNZ. 2020-10-31T04:46:47.95 0.3 undecidable manual S 28 0.2104 119 0.63 64
IV.SLCN.HHZ. 2020-10-31T04:46:47.07 0.6 undecidable manual S 79 0.1853 123 0.39 46
IV.MGR.HHZ. 2020-10-31T04:46:47.52 0.6 undecidable manual S 151 0.25 114 -0.85 39
IX.SRN3.HNZ. 2020-10-31T04:46:45.08 0.6 undecidable manual S 21 0.1385 133 -0.53 47
IX.TEGI.HNZ. 2020-10-31T04:46:44.48 0.6 undecidable manual S 78 0.1115 141 -0.56 47
IV.BULG.HHZ. 2020-10-31T04:46:44.66 0.3 positive manual P 183 0.2779 111 0.21 73
IV.CMPR.HHZ. 2020-10-31T04:46:44.69 0.6 undecidable manual S 241 0.0791 150 0.19 50
IV.MCEL.HHZ. 2020-10-31T04:46:44.93 0.6 negative manual P 96 0.3121 108 -0.08 49
IV.MGR.HHZ. 2020-10-31T04:46:43.60 0.6 positive manual P 151 0.25 114 -0.41 46
IX.STN3.HHZ.02 2020-10-31T04:46:43.90 0.3 undecidable manual P 48 0.2617 113 -0.3 71
IV.SGO.HNZ. 2020-10-31T04:46:43.58 0.1 undecidable manual P 342 0.2149 119 0.11 100
IX.CGG3.HNZ. 2020-10-31T04:46:43.69 0.1 undecidable manual P 28 0.2104 119 0.29 96
IV.SLCN.HHZ. 2020-10-31T04:46:42.79 1.0 undecidable manual P 79 0.1853 123 -0.25 24
IX.SRN3.HNZ. 2020-10-31T04:46:42.09 0.1 undecidable manual P 21 0.1385 133 -0.33 97
IV.CMPR.HHZ. 2020-10-31T04:46:42.01 0.1 negative manual P 241 0.0791 150 0.23 100
IX.TEGI.HNZ. 2020-10-31T04:46:41.66 0.1 undecidable manual P 78 0.1115 141 -0.43 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CMPR.HHN. ML:1.7 0.00038 0.28 AML other m 2020-10-31T04:46:44.72
IV.CMPR.HHE. ML:1.5 0.00026 0.26 AML other m 2020-10-31T04:46:44.88
IV.SLCN.HHN. ML:0 7.925E-5 1.64 AML other m 2020-10-31T04:46:48.02
IV.MGR.HHE. ML:1 4.335E-5 1.3 AML other m 2020-10-31T04:46:48.12
IV.MGR.HHN. ML:1 5.175E-5 0.2 AML other m 2020-10-31T04:46:49.32
IV.SLCN.HHE. ML:0 0.0001295 0.28 AML other m 2020-10-31T04:46:50.19
IV.BULG.HHN. ML:1.2 7.055E-5 0.72 AML other m 2020-10-31T04:46:50.15
IV.BULG.HHE. ML:1.1 5.1E-5 0.56 AML other m 2020-10-31T04:46:52.35
OT.OT11.EHE. ML:2.3 0.0001325 0.08 AML other m 2020-10-31T04:47:15.32
IV.SLCN.HNE. ML:1.4 0.00013315745 0.272 AML other m 2020-10-31T04:46:50.19
IX.STN3.HHE.02 ML:2.7 0.002278261 0.272 AML other m 2020-10-31T04:46:51.16
IX.STN3.HHN.02 ML:2.7 0.002334674 0.288 AML other m 2020-10-31T04:46:52.47
IV.BULG.HNE. ML:1 3.876651E-5 0.1792 AML other m 2020-10-31T04:46:51.35
IV.BULG.HNN. ML:1 3.848749E-5 0.1824 AML other m 2020-10-31T04:46:50.33
IV.MCEL.HNE. ML:1.3 7.3465975E-5 0.5984 AML other m 2020-10-31T04:46:56.15
IV.MCEL.HNN. ML:1.4 8.4071275E-5 1.0784 AML other m 2020-10-31T04:46:52.22
IV.MCEL.HHE. ML:1 3.602877E-5 0.32 AML other m 2020-10-31T04:46:53.23
IV.MCEL.HHN. ML:0.8 2.480742E-5 0.24 AML other m 2020-10-31T04:46:52.17
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download